Artificial-stone mold.



No. 783,820. PATENTED FEB. 28, 1905. J, B. OLA'YTON L R. D. O. JOHNSON.

ARTIPOIAL STONE MOLD.

AMLIUATION FILED JUNE 27.1904.

2 SHEETS-SEBET 1.

u il n www sg num gg l||| In I millH n W La tM dlllll :"ll t ii [ik N um I III!! i No. 783,820. PATBNTED FEB. 28, 1905. J. B. CLAYTON (Y: R. D. O. JOHNSON.

ARTIFICIAL STONE MOLD.

APLTOATION FILED .TUNE 27.1904.

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T n 1 u Fim@ Patented February 29), 1905.

JUl-lN B. ULAYTUN, OF KIRKVVOOD, iltND RENO l). t). JOHNSON, OF ST.

LOUlti, FUSSUURI.

an'rnfieintmerem: inerte.

SPECFICATION forming part of Letters Patent No. 783,820, dated February 28, 1905.

Application tiled June 27, 1904. Serial No. 214,332.

To f//ZZ whom t 'nt/ty concern:

Be it known that we, JOHN B. CLAYTON, re' siding at lirlnvood, and RENO l). 0. JonNsoN, residing at St. Louis, Missouri, citizens ot' the United States, have jointly invented a certain new and useful Improvement in Artiticiah Stone Molds, ol'l which the 'tollowingis a Vt'ull, clear, and exact description, such as will euable others skilled in the art to which it appertains to make and use the same, reference being had to the acconnianying' drawings, 'forming part olI this specilication, in which- Figure l isa side elevational view oi' a mold constructed in :liccordance with our in veu tion. Fig. 2 is an end view ol the mold. Fig. 3 is a vertical longitudinal sectional view through the mold. Fig. t is a transverse sectioiml view through the mold. Fig'. 5 is a horizontal sectional view through the mold. Fig. G is an inverted plan view oi" the cover. Fig. i is a fragmentary sectional view oil a slightlymodified form of mold. Fig. 8 is a fragmentary sectional view of one end oli' the modilied iliorm of mold, and Fig. 9 is a detail perspective view o't the lmilding-block.

This invention relates to a mold 'for `tormingl artiiicial building-blocks The primary object, is to provide a mold `for forming' building-blocl s, which mold is so constructed that the compression oli the block will be exerted against the interior walls instead of exteriorly, as at present practiced.

Another object ot' this invention is to provide means whereby an even pressure can be exerted.

Another object is to provide means whereby the block may be conveniently removed Vlrom the mold a'lter the material ot' which it is composed has set.

A still further object ol1 the invention is to provide means for conveniently locking the parts ol. the mold.

Another object is to provide an expansible and contractible core which is capable ol'I compressing the block.

Other objects and advantages, as well as the novel details ot construction, will be specilieally described herina'lter, it being nnderand minor details of constriflction may be resorted to without departing `from the spirit and sacrificing any ot' the znlvantages thereol".

ln the drawings illustrating the preferred embodiment of our invention, l designates a base simported upon the feet A ialse or removable betteln 3 `is supported upon the base and is designed to receive the block 'formed by the mold. A sectional moldingcore is provided which consists" oi two expansible and :ontracti ble parts, (desi gnated by the nui'nerals Il and 5, respectively.) 'lhese parts Ll and 5 have overlapping edges (i and T, and when the parts ar in their contractinl positions the core is a)iproximately rectangular. rlhe hollow inwardly-projecting bosses h and 9 are provided with internally-thrraded nuts to receive the right and lett threaded portions l0 and ll oi the adjusting' member l2. An intermediatecircularhead 13 is provided ilfor the adjusting member, which head is provided with peripherallydisposed recesses la lor the reception ol a suitable adliusting-tool, such as a spanner or similar imple] nent. ln order that the adjustii'ig-tool may be guided into engagement with the recesses in the head, we have provided parallel flanges and le, which are ciroumlerentially disposed on the head, the inner sides being beveled, whereby the tool will be guided into proper engagement with the recesses.

.18 and i12) designate the sides ol" the mold and 2O and il the ends theieo'lf. The sides oil` i the mold are hinged to the base 1, suitable re ceases 23 boing provided in the base 'for the rer..eption olB the lugs 2%, which lugs are pivotally secured to the haseby the rods 25, which act as pintles lor the hinged connections. Feriorate lugs 26 are lormed on the end ol the base l forengagementwith the bilurcatml lugs 27 ol'l the end walls, which have openings registering with those in the lugs 26, so that the pintledaolts 28 may pass therethrough and iorm a suitable ':onnection.

liy hinging the sides and ends ol the mold they can be easily 'Folded ont ol engagement with the finished block, so that the bloeit can be conveniently rennived. .a novel means is stood that changes in the lorm, proportion, i provided l"orlocl ingthe sides and einlsagainst condition.

movement. The sides are held against movement by means of the overlapping arms 29 and 80, carried by the respective ends of the mold, the ends being formed with fianges 31, which overlap the edges of the sides. The overlapping arms 29 and 3() are provided with alining perforations for the reception of a fastening device 31, which may be suitably inserted therein to prevent accidental displacement of the sides when the mold is being lilled.

A top 32 is formed with depending' fianges which fit over the edges of the ends, said top being held against upward displacement by means ofswingingsecuring'devices,illustrated as hooks 33 and 34. These hooks are hinged on the pintles, which carry the respective ends of the mold, and when they are swung into locking position suitable wedges can be inserted between the hooks and the cam-faces 35 and 35 of the top. It will be observed that the top is provided with an elongated centrally-disposed slot 36, the edges of the slot overlapping the core, so that the matrix of the mold will be entirely inclosed. rlhe purpose of providing` the elongated slot 36 in the top or cover of the mold is to provide means whereby the tool may be inserted for actuating the core-expander. In order that the best results may be obtained, it is desirable that the core remain centered with respect to the mold. The centering devices are illustrated as pins `3T and 38, which project through openings in the false bottom and in the core. Slots 41 and 42 are formed in the bottom 3, which slots are designed for the purpose of receiving ribs 43 on the eore-sections, so that the mold-sections will be properly held in place and guided.

In utilizing the mold the core is first properly centered in the iiask and the material of which the finished block is to be composed is fiowed in the matrix in a plastic or semiplastic rlhe top is then placed upon the flask and secured against movement by the hooks. The tool is then inserted through the slot in the top, and the expander is manipulated, whereby an internal compression is exerted in the mold and against the material, the sides, and ends of the iiasl.

The principal advantage accruing from the manipulation of the core so that an internal pressure will be exerted is that the exterior of all of the blocks made will be uniform. lt is obvious that if an external pressure be exerted upon the block this uniformity in size cannot be provided. Of course it is obvious that as soon as the block has sufciently set it can be removed and allowed to season. It is also obvious that these blocks can be formed with various configurations upon the exterior surfaces and that any design may be impressed or molded upon the face or faces of the block to suit the demands of the trade. In the modified form illustrated in Figs. 7 and 8 we have illustrated means whereby a suitable deslgn may be molded in imitation of rough rock or other similar design. This can be accomplished by making one or both sides in the' form of a frame 44, having a rabbeted edge to receive a removable molding-die 45. vhere it is desired to configure the face or faces of the block, a frame of standard size will be employed, and interchangeable dies will be used for cooperation with said frame, so that it will only be necessary to substitute one die for another to change the design on the face of the block. There the removable dies are used, the fastening devices or hooks will usu' ally be of a peculiar design, the body portions being inclined in an outward direction, as at 46, whereby the bodies of the hooks may be spaced away from the mold to give ample room for the insertion of the dies.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

1. A molding-core comprising two sections movable away from and toward each other, alining bosses carried by the sections and provided with interior threads, any expanding member having exterior threads engaging the threads in the bosses, and a flanged head carried by the expanding member and forming a part thereof, the fianges of the head comprising guides for guiding an expanding tool into engagement with said head; substantially as described.

2. A mold for building-blocks having hinged sides and ends, the ends having arms with alining openings and fastening devices for engagement with said openings; substantially as described.

3. A mold for building-blocks having a slotted false bottom, pins projecting through said false bottom to retain it rigid with relation to the remainder of the mold and a sectional expansible core having projections in the slots of the false bottom whereby said sections are guided by said slotted bottom; substantially as described. i

4. A mold for building-blocks having a removable false bottom to support the block after it leaves the mold, said bottom being provided with slots therein, and a sectional and expansible core, the sections of which are provided with projections guided in said slots; substantially as described. y

5. A mold for hollow building-blocks comprising a base, hinged sides and ends carried by the base, the ends being provided with arms having alining openings, fastening devices for engagement with the openings, and a removable cover having flanges overlapping' the edges of the hinged sides and ends; substantially as described.

6. A mold for hollow building-blocks comprising a base, hinged sides and ends carried by the base, a top or cover fitting over the sides andV ends, and pivoted hook fastening devices having their terminals extending over ICO IIC

the top of the scribed.

7. A mold for hollow building-blocks including a cover having a slot therein, an expansible core within the mold and having' a slot in alinement with the slot in the cover, and an expansible devicev entirel;7 within the core and mold and alining with the abovenamed slots, said expanding device being aecessible through said slots; substantially as described.

8. In a mold, the combination with a base, sides and ends, iianges on the ends and overlapping the sides, arms projecting from the flanges and projecting toward each other, and fastening devices connecting1 the ends of the arms; substantially as described.

9. A mold having a base, sides and ends, a removable cover for the mold and fitting over the sides and ends, cam-faces on the cover,

cover; substantially as dehinged hooks having their ends movable to positions over the cam-faces, and wedges insertible between the ends ol. the hooks and the earn-faces; substantially as described.

10. A mold for hollow building-blocks including a base, hinged sides and ends `carried by the base, arms carried by the lends and having alining openings, fastening` devices for the alining openings, a cover, and hinged hooks at the ends of the mold and adapted for engagement with the cover to hold it in place; substantially as described.

In testimony whereof we hereunto a'l'iix our signatures, in the presence oi two witnesses, this 21st day of June, 1904.

JOHN B. CLAYTON. RENO D. O. JOHNSON. Witnesses:

B. F. FUNK, (inonde BAKlmvELL. 

